Complex copper compounds of disazo dyestuffs



United States Patent "ice g, ,23

3' sulphacetylaminobenzoyl amino) hydroxy- 2,824,868

naphthalene 7 sulphonic acid, 2 (3 methyl 4 COMPLEX COPPER COMPOUNDS 0F DISAZO sulphacetylaminobenzoyl amino) 5 hydroxynaphtha- DYESTUFFS lene 7 sulphonic acid, 2 (3 or -4' sulphacetyl- Ernst Keller, Binningen, and Rudolf Diirig, Basel, Swit- 5 amimbtnzotl P hydroxynaphflialene zerland, assignors to L R. Geigy G. Base], switzeb sulphonic acid, 2- (3 or 4 sulphacetylammobenzoylland amino) 6 hydroxynaphthalene 8 sulphonic acid,

2 (3 methyl 4 sulphacetylaminobenzoyl amino)- No Drawing APplicafion September a 1955 8-hydroxynaphthalene-6-sulphonic acid.

Seflal 532774 10 Preferably hydroxynaphthalene sulphonic acids cou- C i priority, application Switzerland pling in the neighbouring position to the hydroxyl group November 17, 1954 not having the critical sulphacetylamino group can be used as further coupling components. These may also con- 6 Clalms' (CL 260-148) tain amino, acylamino or phenylamino groups as further Th present invention is concerned with disazo substituents. Examples are: 1-hydroxynaphthalene-3.8- stuffs and the complex copper compounds thereof, the P acid, Y Y P production and use thereof for the dyeing of cellulose PhOniC acid, 1-hYd1'0XYI1aPhtha1611e-3-58-tFiS111Ph0I1iC acid, material as Well as the material fast dyed with the aid of 2 hydfoxynaphthalefle disulphonic acid,

these compounds. droxynaphthalene 3 sulphonic acid, 2.8 dihydroxy- It has been found that the complex copper compound naphthalene sulphPnlc Y Y P of disazo dyestuffs having the general formula: ihalene dlslllphomc acld, 1 acetylamlnfl 5 y- OH 7 OCHs (|)CHa ?H (H0 ;soH2o O-NHX) .,1LN=N N=NBX-NHG 0-0H=-SO3H (SO3H),. (503B)... wherein: droxynaphthalene 7 sulphonic acid, 2 phenylamino- 5 hydroxynaphthalene 7 sulphonic acid, 2 benzoylamino 8 hydroxynaphthalene 6 sulphonic acid, Z-acetylamino 8 hydroxynaphthalene 6 sulphonic A and B each represent a naphthalene radical bound to the azo group in ortho-position to the hydroxyl group, X represents a member selected from the group consisting acid. of the: NH' Ph NH 'CO Ph and The coupling is performed in an alkaline medium: NH CONH Ph when producing unsymmetrical disazo dyestuffs it is of radicals, wherein Ph represents a phenylene radical, advantage to couple in steps using that coupling compou and m are each one of the integers 0 and 1, and nent first which produces an easily soluble monoazodiaz o n is one of the integers l, 2 and 3; compound, i. e. advantageously a hydroxynaphthalene compound sulphonated at the naphthalene nucleus.

The disazo dyestuffs according to the present invention are metallised preferably in substance by treatment with the usual agents giving off copper in aqueous solution or 40 suspension at a raised temperature, for example with copper salts such as copper sulphate, copper chloride, copper acetate, possibly in the presence of inorganic or organic salts such as sodium chloride, sodium acetate,

A and B being otherwise free from. further sulphacetylamino groups, are suitable for the fast dyeing of cellulose material in blue to blue-grey shades. These dyestuffs are obtained if a tetrazotised 4.4'-diaminodiphenyl compound containing a substituent capable of forming the metal complex in each of'the o-positions to the diazo groups is coupled with 2 mols of the. same or 1 mol of each of two different hydroxynaphthalene compounds which couple in x the o-position to the hydroxyl group, at least one of the 500mm} tartrate or Wlth complex salts. such as P hydroxynaphthalene compounds containing the radical tetramine sulphate. The easily metallisable o.o -d1hydroxy-azo dyestuffs according to the present invention can f l fg i ggf gz f g gg iggifii also be metallised on the fibre by treatment with copper or salts. The disazo dyestuffs according to the present invention which are coppered in substance are, however,

NH CONH Ph particularly valuable. They are dark powders which, in

wherein Ph represents a phenylene radical which can be the form of their alkali salts, dissolve in hot water with a further substituted if desired. blue to grey colour according to the composition and they The disazo dyestuffs so obtained are converted into the dye .cellulose material in very fast corresponding shades. complex heavy metal compounds advantageously in sllb- In contrast to comparable known copper containing stance but also they can be converted on the fibre with disazo dyestuffs which either do not contain the characteragents giving off copper. istic sulphacetylamino group which is the subject of the 4.4-diamino-3.3'-dimethoxy diphenyl is the preferred present invention or in which this group is replaced by an tetrazo component. acetyl or benzoyl, group, the new copper containing disazo The following compounds are examples of coupling dyestuffs are distinguished by a better levelling power on components which contain the sulphacetylamino group 60. cellulose fibres. bound to the naphthalene radical by Way of a bridging The following examples illustrate the invention without member: 2 (4' sulphacetylaminophenyl amino) 5- limiting it in any Way. Where not otherwise stated, parts hydroxynaphthalene 7 sulphonic acid, 2 (3' or 4' are given as parts by Weight and the temperatures are in sulphacetylaminobenzoyl amino) 5 hydroxynaphthadegrees centigrade. The relationship of parts by weight to lene; 7 sulphonic acid, 2 (4' methylor -4' chloroparts by volume is as that of kilogrammes to litres. Example 1 H038 OCH: OCHz OH on i ' 803E H028 NH-COONH-CO-Cflr-SOsH short time .the diazomonoazo dyestuif has completely 7 24.4 parts of o-dianisidine are tetrazotised in the usual stuff dyes cotton and staple rayon in strong grey-blue way and poured at -5 into a solution of 30.4 parts of shades. The dyeings have very good fastness to light.

l-hyd roxynaphthalene-B.Ei-disulphonic acid and 35 parts If, instead of 2.8-dihyd YD Phtha1ene-o-sulphonic 7 of sodium carbonate in "1000 parts of water. After a acid, 1.8-d1hydroxynaphthalene-3.6-d1sulphomc acid or 7 1-hydro:tynaphthalene-4.S-disulphonic acidis used and precipitated and no more tetrazqnium compound can otherwise the same procedure is followed, thendisazo be traced. A soda'alkaline solution of 48.2 parts of 2- dyestuflfs are obtained, WhlCh, as copper complexes, dye w sulphacetylam'inobenzoyl amino) 5 hycellulose material in blue shades which have very good droxynaphthalene-7-sulphonic acid is then added and the fastness tolight. p a a whole is stirred until the coupling is complete. The Similar dyestuffs are obtained also if the 2- (4' 0- disazo dyestufi obtained' in this manner is precipitated sulphacetylaminophenyl amino) 5 hydroxynaphthawith sodium chloride, filtered 0E and again dissolved lene-7-sulphonic acid is replaced by.2-(3-o-sulphacetylin 2500 parts of water at 80-85 400 parts of an amaminobenzoyl amino) '5 -,hydroxynaphthalene 7 monia cal copper oxide solution which contains parts sulphonic acid or 2- (3'-wrsulphacetylaminobenzoylof crystalline copper sulphate and 120 parts of concenamino)-8-hydroxynaphthalene-6-sulphon1c ac d.

. 7 Example 3 V -HO3S OH OCH:

.trated aqueous ammonia are added and the whole is '25 a a l luti n of 48 parts of 2-(4'13- stirred for 4-5 hours at -85. After the addition sulphacetylaminobenzoylamino) 8 y yn p cf a further 50 parts of concentrated ..lene-6-sulphonic acid is 'poured into ;the intermediate h h 1 h t d t d f 'furth 1540 product from 24.4 parts o f tetrazotised o-dianisidme and t e w 0e 18 ea c a or a er 30.4 parts of 2-hydroxynaphthalene-3.6-d1sulphonic acid 30 and the whole is stirred until the coupling is complete.

The copper complex compound produced therefrom as hours. The copper complex formed is precipitated with sodium chloride, filtered ofi and dried. It is a' dark powder which dissolves in water with a blue colour and described n Example 1 dyes cellulose material direct which diaws excuenfly from an aqueous bath n in greyish-blue shades which have very' good fas'tness cotton, hnen and regenerated cellulose fibres. The dye to light. a V a ings have very good fastn'ess to light and the shade and 5 If in this example the 2- 4' w p i i b n H fastness to light are barely influenced by anti-crease 1 g hydroxynaphthalene gt'sulphonic processing. 7 acid is replaced by 2- (3' w-sulphacetylaminobenzoyl Similar dyestuffs are obtained if in this example the amino)-6-hydroxynaphthalene 8-sulphonic acid or by 2- 2' 4' ca sulphacetylaminobenzoyl amino) 5 hyw P sulphacetylaminophenylcarbamyl droxynaphthalene-7-sulphonic acid is replaced by 2-(3- 9' hydroxynalfhthalene'7sulPl}onic i by 1 w sulphacetylamiuobenzoyl amino) 5 hydroxysulphacetylammobenzoyl i ammo) i 5 hydroxynaphflla' r lene-7-sulphonic acid, then copper containing disazodyenaphthalene-7-sulphon1c acid or by 2-(4 w-sulphacetylstuffs with similar good properties are obtained.

aminophenylcarbamyl amino) 4 5 hydroxy aP f Similar dyestuffs are also obtained if the 2-hydroxy- V lene-7-sulphonic acid or by ,2- (4' --w-sulphacetylammonaphthalene- 3. 6- disulphonic acid is'replaced byil-hy- I phenyl-amino)-5-hydroxynapthalene-7-sulphonic acid or droxynaphthalenefi.6.8-trisulphonic acid.

7 Example l 7 V HOaS-CHr-CO-NH OH 00 7 o SOzH 110, i

by 2 (3@w-sulphacetylarninobenzoyl-amino) -6-hydroxy- A soda alkaline solution of 34.3 parts of '2-henzoylnaphthalene-8-sulphonic acid. amino 8-hydroxynaphthalene-6-sulphonic acid is poured Example 2 on 7 con, 7 00m 0H 7 1 r I v 7 N 'N=N v 0H 7 r no.5 'nH-QN ecOQcm-sOQHL S OsH i V q 1.1 'm

' A. soda alkaline solution of 45.2 parts of 2-(4'-iu into the intermediate product fromo24t4 parts'o f tetra- V. sulphacetylaminophenylamino) 5 hydroxyn'aphtha zotised o-dia'nisidine and 48 parts of 2-(3' u-sulphace5 lene-7-sulphonic acidv is poured into the intermediate 70 tylaminobenzoyl amino) 8 hydroxynaphthalene- 6 product from 24.4 parts of tetrazotised o-dianisidine and 1;: 'sulphonic'acid and the whole is stirred until the coupling 24.0 parts of 2.8-dihydroxynaphthalene-fi-sulphonic acid :is completel The copper complex compound which is and the whole is stirred until the coupling. is complete. i obtaiuedaccording to themethod described in Example V The dyestufi' is converted into the copper complex as l dyes cotton'and staple rayon direct in greyisheblue describedin Example 1. The copp'ericontaining dye1Li75 shades which have vei'y good -fastness to light.

cotton are entered at 40-50", the bath is, warmed within 30 minutes to 90-95", 30 parts of sodium sulphate are added and dyeing is performed for 45 minutes at this temperature. After this time, the dyed goods are rinsed cold in the usual way and dried. The cotton is dyed A soda alkaline solution of 48 parts of 2 (4 w sulphacetylamino-benzoyl amino) 5 hydroxynaphthalene-7-sulphonic acid is poured into the intermediate product from 24.4 parts of tetrazotised o-dianisidine and 48 parts of 2-(3'-w-sulphacetylaminobenzoyl-amino)-8- in vivid blue shades which have good wet fastness and very good light'fastness properties.

What we claim is:

1. The copper complex compound of a disazo dyestufi having the general formula:

OCH; OCH: OH on (HOzS-CHa-C ONH-X) .r tN=N N=NBXNH-c 0cH,s0=H

(SO3H)|| (S0311)...

hydroxynaphthalene-6-sulphonic acid and the whole is wherein:

stirred until the coupling is complete. The copper complex compound produced therefrom according to Example 1 dyes cellulose material direct in blue shades which have very good fastness to light.

If in this example the 2-(3'-w-sulphacetylaminobenzoylamino) -8-hydroxynaphthalene-6-sulphonic acid is replaced by 2-(4'-w-sulphacetylaminobenzoyl-amino)-8-hydroxynaphthalene-6-sulphonic acid or if 2-(4'-w-sulphacetylaminophenyl-amino) 5-hydroxynaphthalene-7-sulphonic acid or 2-(3'-w-sulphacetylaminobenzoyl-amino)- S-hydroxynaphthalene-7-sulphonic acid is used instead of 2-(4-w-sulphacetylaminobenzoyl-amino)-5-hydroxynaphthalene-7-sulphonic acid and otherwise the same procedure is followed, then copper containing disazo dyestuffs with similar good properties are obtained.

0 A and B each represent a naphthalene radical bound to the azo group in ortho-position to the hydroxyl group, X represents a member selected from the group consisting of the NHPH, NHCOPhand radicals wherein Ph represents a phenylene radical, u and m are each one of the integers 0 and 1, and n is one of the integers l, 2 and 3,

A :and B being otherwise free from further sulphacetylamino groups. 2. The complex copper compound of a disazo dyestutf having the formula:

H035 0H OCH; mm OH son; HOaS NHO O-QNH-CO-CHr-SOzH ple 6 3. The complex copper compound of a disazo dyestuff 2 parts of the dyestufi obtained according to Example H038 OH OaH having the formula:

OCHa OH 4. The complex copper compound of a disazo dyestutf having the formula:

OCHa OH HOzS 6. The complex copper compound of a disazo dyestuflf i i i having the formula:

H0a8-CHz-O0-NH OH 00115" OCH; OH

'7 00 1 111 N=N N=N mi-o'oomsoan so-n H0: NH-OO Referenos Cited in the fiieiof this pitz nt F V '1 UNITED STATES PATENTS 

1. THE COPPER COMPLEX COMPOUND OF A DISAZO DYESTUFF HAVING THE GENERAL FORMULA: 